Molding apparatus



June 1'1, 1929. y A. L. NELSON 1,716,792

MOLD I NG APPARATUS Filed lJune vl5, 1925 i cavity 'y Patented June 11, 1929.

t UNITED `STATES 1,716,792 PATENT OFFICE..

.ADOLPH L. NELSON, OF DETROIT, MICHIGAN, ASSIGNOR TO BOHN ALUMINUM 48c BRASS CORPORATION, OF IDE'.ITIROIT,k MICHIGAN. K

MOLDING APPARATUS.

Application lled .Tune 15, 1 925. Serial No. 37,315.

10 able by a rockable pry and is inclined to the direction of movement of the. core by an amount such that the resultant force applied to the core through-the pry is substantially parallel to the direction of movement of the I5 core. Other objects of the invention reside in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings Figure 1 is 'a side elevation of a molding apparatus embodying my invention; Figure 2 is a plan view thereof. 1 is the mold, which is preferably formed i of metal, and has in it's lower portion the 2.d 3 is the core member insertable from the top of the mold into the cavity 2 thereof and guided by the portion of the mold between its top andthe cavity. 4 is a ry for loosening the core member, this pry having the bifurcated end 5, the furcations of which engage the laterally extending shoulders 6 upon opposite sides of the core member, the. pry being arranged to rock` or fulcrum upon the top of the mold in the present instance.

For the purpose of readily and easily l loosening the core member, I have, as shownv in the present instance, inclined the shoulders 6 of the core member to the direction of 40 movementof the core member and in the direction of movement of the contacting portion of the furcations of the pry, the amount of inclination being such that the resultant force applied to the core member throughy the pry 's parallel to the direction of movement of the core member. As diagrammatically shown in Figure 1, a certain force indicated by the arrow 7 is exerted parallel to the shoulders 6 and inthe direction of the movement of the contacting` portions of the pry f urcations. Also a certain other force, as indicated by the arrow 8, is exerted atfright angles to the shoulders, angle of inclination Aof these shoulders being such. that the resultant force, as indicated the bythe arrow 9, is parallel to the direction of movement of the core member or longitudinallyJ thereof.

To take care of inaccuracy in forming the shoulders upon the core members and at the same time to provide for lifting force upon each shoulder, clearance is provided between the inner sides of the furcations of the pry and the core member so that when applying the pry to the core the former may be swung about the axis of thelatter to bring both furcations into contact With their respective shoulders. With this adjustment force upon the shoulders is assured during theraising movement of the core member.

What I claim as my invention is:

` l. In molding apparatus, the combination with a mold, of a core member insertable into said mold, a rockable pry for loosening said core member, and cooperating bearing surfaces upon said core member and pry, one of said bearing-surfaces being inclined to the direction of movement of said core member by an amount such that the resultant force applied to said core member through said 'pry is substantially parallel to the direction of movement of said core member.

2. In molding apparatus, the combination with a mold, of a core member insertable into said mold, a rockable pry for loosening said core member, and a shoulder upon said core member engageable by said pry and in'- clined to the direction of movement of said core member byan amount such that the resultant force applied to said core member through said pry .is substantially parallel to the direction vofqmovement of said core'` member.

3. In molding apparatus, the combination with a mold, of a core member insertable into said mold, a rockable pry for loosening said core member, and a shoulder upon said core member engageable by said pry and inclined to the direction of movement of said core member and in the direction of movement of the portion of said pry engageable therewith by an amount such that the resultant force applied to said core member through said pry is substantially parallel tothe direction of movement of said core member. i

4. In molding apparatus, the combination with a mold having a cavity, of a core member insertable into said mold and extending into said cavity, a rockable pry for loosening said core member having furcations on opposite sides thereof, and shoulders on opposite sides of said core member engageable by said furcations and inclined to the direction of movement of said core member by an amount such that the resultant force applied to said core member throughv said pry is substantially parallel to the direction of movement of said core member.

into said mold and provided with inclined shoulders on opposite sides thereof, and a.

pry provided with furcations on opposite with said shoulders.

In testimony whereof I aliix my signature.

ADOLPH L. NELSON.

5. In molding,r apparatus., the combination 10 Wlth a mold, of a core member insertable f sides of said core member enga-geable equally 15 

